10121021101220 has 12 divisors (see below), whose sum is σ = 21254144312604. Its totient is φ = 4048408440480.

The previous prime is 10121021101097. The next prime is 10121021101271. The reversal of 10121021101220 is 2210112012101.

10121021101220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5792657358436 + 4328363742784 = 2406794^2 + 2080472^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10121021101195 and 10121021101204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253025527511 + ... + 253025527550.

It is an arithmetic number, because the mean of its divisors is an integer number (1771178692717).

Almost surely, 2^{10121021101220} is an apocalyptic number.

10121021101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121021101220 is an abundant number, since it is smaller than the sum of its proper divisors (11133123211384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10121021101220 is a wasteful number, since it uses less digits than its factorization.

10121021101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506051055070 (or 506051055068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10121021101220 its reverse (2210112012101), we get a palindrome (12331133113321).

The spelling of 10121021101220 in words is "ten trillion, one hundred twenty-one billion, twenty-one million, one hundred one thousand, two hundred twenty".